Yeah... I'll listen to Into the World more. I love Yume no Daichi though, sure, it's not as grand as storia or symphonia, but it still has that RHH feel to it. (Though I've never seen the show, I mean it goes along with the instrumental music) I saw it live too at ACen so I love it even more now. But here's mine, since we're doing this:
storia>Yume no Daichi>symphonia>far on the water (though I love this song)>into the world (I just don't like it very much yet, maybe it'll grow on me though and I might change my answer)
I am hoping Yuki will release another instrumental album, and then it might be on that. Since that's what happened with symphonia and Yume no Daichi, they were on the soundtrack first and then the album. So maybe this will be the same way. I am hoping.